1257486132 has 48 divisors (see below), whose sum is σ = 3358904192. Its totient is φ = 358680960.

The previous prime is 1257486103. The next prime is 1257486133. The reversal of 1257486132 is 2316847521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257486133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39282 + ... + 63702.

Almost surely, 2^1257486132 is an apocalyptic number.

1257486132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1257486132 is an abundant number, since it is smaller than the sum of its proper divisors (2101418060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1257486132 is a wasteful number, since it uses less digits than its factorization.

1257486132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25048 (or 25046 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 1257486132 is about 35461.0509150533. The cubic root of 1257486132 is about 1079.3635172899.

The spelling of 1257486132 in words is "one billion, two hundred fifty-seven million, four hundred eighty-six thousand, one hundred thirty-two".